02 Jun 2026
Koha is the first free and open source software library automation package (ILS). Development is sponsored by libraries of varying types and sizes, volunteers, and support companies from around the world. The website for the Koha project is:
Koha 25.05.11 can be downloaded from:
Installation instructions can be found at:
Koha 25.05.11 is a bugfix/maintenance release.
It includes 1 enhancements, 34 bugfixes.
System requirements
You can learn about the system components (like OS and database) needed for running Koha on the community wiki.
This fixes suggestion details not showing when you click the title in the staff interface suggestions management table.
(Related to changes made by Bug 41857 - Suggestions table actions broken (Update manager and Delete selected), added in Koha 26.05.)
This change makes the "Scheduled for automatic renewal" text only appear in the renew column of checkouts table in the staff interface and OPAC when the item will actually be considered for automatic renewal.
The text was showing, even if the item would not automatically be renewed due to automatic renewals being disallowed at the patron level.
This now matches the criteria that misc/cronjobs/automatic_renewals.pl uses for processing automatic renewals.
41886 Biblio::check_booking counts checkouts on non-bookable items causing false clashes
Sponsored by Büchereizentrale Schleswig-Holstein
This fixes and standardizes links to tabs for the patron summary section in the OPAC (such as Checked out, Overdue, Charges, Holds, and so on).
In the past, we have used several different ways (some that work, some that don't) to construct the links to the tabs.
Now, to directly link to a tab in the summary section, add ?tab=opac-user-* to the URL when you are in the summary section (where * = tab name from the anchor when you hover over the tab, for example checkouts (for Checked out), overdues (for Overdue), fines (for Overdue), recalls (for Recalls)).
This fixes the patron search in the staff interface header.
If the search you enter didn't show any autocomplete results, clicking the arrow to search didn't do anything.
Now, it will use the search you entered and show any results.
41904 "Use of uninitialized value..." warning in del_message.pl
Sponsored by Ignatianum University in Cracow
This changes the "Contact information" section on the patron details page (moremember.pl) to: - show the "Middle name" field (where it exists) - show the "Preferred name" field at the top (where it differs from the "First name").
41715 Argument "YYYY-MM-DD" isn't numeric in numeric lt (<)... warnings in issues_stats.pl
Removes the cause of "[WARN] Argument "YYYY-MM-DD" isn't numeric in numeric lt (<) at /kohadevbox/koha/reports/issues_stats.pl line 224." warnings from the plack-intranet-error.log when using the from and to date filter in the circulation statistics report in the staff interface.
This was happening because a numerical comparison was used to compare the dates, instead of a string comparison.
Sponsored by Ignatianum University in Cracow
41496 Item search copy sharable link not working
Sponsored by Lund University Library
This renames BibTex to BibTeX (with a capital X) for the staff interface cart and list download options (to match the OPAC).
This adds three new toolbar buttons to make batch modifications to the transport cost matrix table easier (when UseTransportCostMatrix is enabeld):
- Enable all cells
- Disable empty cells
- Populate empty cells, with selectable values from 0 to 100
Templates
41838 Fix automatic tab selection on MARC subfield edit pages
Sponsored by Athens County Public Libraries
The Koha manual is maintained in Sphinx. The home page for Koha documentation is
Koha Documentation As of the date of these release notes, the Koha manual is available in the following languages:
The Git repository for the Koha manual can be found at
Complete or near-complete translations of the OPAC and staff interface are available in this release for the following languages:
Partial translations are available for various other languages.
The Koha team welcomes additional translations; please see
For information about translating Koha, and join the koha-translate list to volunteer:
The most up-to-date translations can be found at:
The release team for Koha 25.05.11 is
Release Manager: Lucas Gass
QA Manager: Martin Renvoize
QA Team:
Documentation Manager: David Nind
Documentation Team:
Translation Manager: Jonathan Druart
Wiki curators:
Release Maintainers:
Release Maintainer assistants:
We thank the following libraries, companies, and other institutions who are known to have sponsored new features in Koha 25.05.11
We thank the following individuals who contributed patches to Koha 25.05.11
We thank the following libraries, companies, and other institutions who contributed patches to Koha 25.05.11
We also especially thank the following individuals who tested patches for Koha
We regret any omissions. If a contributor has been inadvertently missed, please send a patch against these release notes to koha-devel@lists.koha-community.org.
The Koha project uses Git for version control. The current development version of Koha can be retrieved by checking out the main branch of:
The branch for this version of Koha and future bugfixes in this release line is 25.05.x-security.
Bug reports and feature requests can be filed at the Koha bug tracker at:
He rau ringa e oti ai. (Many hands finish the work)
Autogenerated release notes updated last on 02 Jun 2026 21:03:46.